New Jersey Route 21

New Jersey Route 21, also known as the McCarter Highway, is a highway in northern New Jersey which runs 14.35 miles from Newark Liberty International Airport to an interchange with US Route 46 in Clifton, Passaic County. It was created in 1927 to run from Newark to Belleville, and it was extended north to Paterson in 1948, and it was expanded further from the 1950s to the 2000s.